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Estimating Sums and Differences
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A. Do what is asked. Fill in the blank with the correct answer.
1. Estimate the sum and difference of 96 765 and 87 467.
Estimated sum:
Estimated difference:
2. Find the estimated total amount of money that mother paid for the following appliances.
television (TV) set: ₱36,850
refrigerator: ₱18,975
washing machine: ₱12,250
Estimated total amount: ₱
B. Refer to the table and do what is asked. Fill in the blanks with the correct answer.

The following table shows the top 10 most populous cities of Central Luzon as of 2020:

City Province Total Population
San Jose Del Monte Bulacan 651 853
Tarlac Tarlac 385 398
San Fernando Pampanga 354 666
Cabanatuan Nueva Ecija 327 325
Mabalacat Pampanga 293 244
Santa Maria Bulacan 289 820
Malolos Bulacan 261 189
Olongapo Zambales 260 317
Marilao Bulacan 254 453
Meycauayan Bulacan 225 673


3. Estimate the total population of the cities in Bulacan.

4. Estimate the total population of the cities in Pampanga.

5. Estimate the total population of the top 10 cities.

6. Estimate the difference between the population of San Jose del Monte and Tarlac.

7. Estimate the difference between the population of San Fernando and Mabalacat.

8. Estimate the difference between the largest and smallest population.